Platinum
Platinum is a soft, heavy, white metal. It is a precious metal. In the past it cost more than gold, but since the late 2010s, gold cost more. In chemistry, platinum is element number 78, and its atoms have an atomic weight of 195 a.m.u.. The symbol for platinum is Pt, from Spanish platina meaning "little silver".
Platinum is very malleable and ductile, which means it can be hammered into thin sheets and it can be pulled into wire. Platinum is very stable. Acids do not affect platinum. Several other metals are similar and are called the "platinum group".
The most common use of Platinum is in a vehicle's catalytic converter.
Platinum Media
Platinum being dissolved in hot aqua regia
A native platinum nugget, Kondyor mine, Khabarovsk Krai
Platinum-palladium ore, Stillwater mine, Beartooth Mountains, Montana, US
Sulfidic serpentinite (platinum-palladium ore) from Stillwater Mine, Beartooth Mountains, Montana, USA
Antonio de Ulloa is credited in European history with the discovery of platinum.
An aerial photograph of a platinum mine in South Africa. South Africa accounts for ~80% of global platinum production and a majority of the world's known platinum deposits.
Time trend of platinum production
Cutaway view of a metal-core catalytic converter
Prototype International Meter bar made by Johnson Matthey
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